Android访问媒体数据库
ContentResolver resolver = mActivity.getAndroidContext().getContentResolver();
String[] cols = {"_id","_data"};
Cursor cursor=resolver.query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, cols, "_data='"+name+"'", null, "_display_name");
图片:MediaStore.Images.Media.EXTERNAL_CONTENT_URI
视频:Video.Media.EXTERNAL_CONTENT_URI
音乐:MediaStore.Audio.Media.EXTERNAL_CONTENT_URI